Fork of Smiley Face Part II
This example renders a responsive smiley face using React and SVG. The face is centered on the screen, with its size determined by the window dimensions, and includes a yellow head, black stroke, and two eyes positioned symmetrically. The code uses React’s `createElement` and `ReactDOM.render` to mount the SVG, with positions calculated from `window.innerWidth` and `window.innerHeight`. No mouth or other facial features are drawn, only the head and eyes.